<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity {

    /**
     * Authenticates a user.
     * The example implementation makes sure if the username and password
     * are both 'demo'.
     * In practical applications, this should be changed to authenticate
     * against some persistent user identity storage (e.g. database).
     * @return boolean whether authentication succeeds.
     */
    public function authenticate() {
        $user_model = UserTable::model()->find('user_name=:name', array(':name' => $this->username));
        if ($user_model === null) {
            $this->errorCode = self::ERROR_USERNAME_INVALID;
            return FALSE;
        } elseif ($user_model->password !==md5( $this->password)) {
            $this->errorCode = self::ERROR_PASSWORD_INVALID;
            return FALSE;
        } else {
            $this->errorCode = self::ERROR_NONE;
            return TRUE;
        }
//		if(!isset($users[$this->username]))
//			$this->errorCode=self::ERROR_USERNAME_INVALID;
//		elseif($users[$this->username]!==$this->password)
//			$this->errorCode=self::ERROR_PASSWORD_INVALID;
//		else
//			$this->errorCode=self::ERROR_NONE;
//		return !$this->errorCode;
    }

}
